#include<stdio.h>
#include<math.h>
int main(void)
{
	double a,b,s;
	scanf("%lf%lf",&a,&b);
	s = a - b;
	s = fabs(s);
	if(s<=1e-8)
	printf("yes");
	else
	printf("no");
	return 0;
}
